Filling control for bobbin changing loom



March 15, 1960 P. c. coNsoLETTl EVAL 2,928,430

FLLING CONTROL FOR BOBEIN CHANGING LOOM Filed sept. 17, 195e 4 Sheets-Sheet 1 n #a muy W NLR Env-K VME moB A C om uw f W ma ,M/ GV/ 6 B VL\8 \5 8 2 8 l Til u A TTORNE Y March 15, 1960 P. c. coNsoLETTl ETAI- 2,928,430

FILLING CONTROL FOR BOBBIN CHANGING LOOM Filed sept. 17, 195e i 4 Sheets-Sheet 2 INVENTOR. PAUL C. CoNsoLaTTl RONALD BERRY A TTORNE Y March 15, 1960 P. c. coNsoLETTl ETAI- 2,928,430

FILLING CONTROL FOR BOBBIN CHANGING LOOM Filed sept. 17, 195e 4 sheets-sheet s INVENTOR. PAUL C. CoNsoLETTf RONALD BERRY A TTORNE Y March 15, 1960 P. c. coNsoLl-:TTl ETAL 2,928,430

FILLING CONTROL FOR BoBBIN CHANGING LooM 4 Sheets-Sheet 4 Filed Sept. 17, 1956 IN VEN TUR. PAUL. CCONSOLETTI RoNALD BERRY A TTORNE Y United States Patent Ofiice 2,928,430 Patented Mar. 1 5, 1960 FILLING CONTROL FOR BOBBIN CHANGING LOOM Paul C. Consoletti, Milford, and Ronald Berry, Hopedale, Mass., assignors to Draper Corporation, Hopedaie, Mass., a corporation of Maine Application September 17, 1956, Serial No. 610,082

15 Claims. (Cl. 139-256) ered end of an outgoing filling thread and also to cut and to dispose of a similar end from the ingoing bobbin.

i A further object is that of providing. a novel timer means to control the start and the duration of the time period during which an air system shall function at each transfer cycle to perform its intended function.

A further object is that of operating a cutterfor an ingoing thread by air during the replenishing cycle and to cut a filling end held in a thread disposal tube since the previous transfer.

Another object is that of assisting in the action of a thread disposal tube by supplementing it with a compressible thread holder.

A further object is that of devising an air operatedV cutter which shall function to trap a thread at one transfer cycle and cut'it at the succeeding cycle.

Other objects will become apparent from the following more detailed disclosure.

In bobbin changing looms a cutter, preferably of Staf- '.ford type, is utilized to sever and to hold an end of an outgoing thread. That thread extends to the selvage at first, but `is soon cut there by the temple thread cutter -and the end which Will be held at the binder portion of the cutter released at the next transfer may be disposed of by 'a suction tube in a known manner. The ingoing filling end is normally attached at a knob or the like at the battery end and when cut at the selvage after the shuttle has made a few picks with'the new filling supply, is freed to hang from the knob and is very likely to interfere with the outgoing thread or may become Vcaught and pulled into the fabric at times. Various schemes have been advanced to take care of this end of ingoing thread.

j 'According to the instant invention, this ingoing thread is so handled that as soon as it is severed to be released at the selvage, it is drawn into a suction tube and is held Ithereby until the succeeding transfer at which it is cut reference -to one specific embodiment thereof as illus- Jtratedin-the accompanying figures of drawing wherein: Fig. 1 `is a perspective view-of the invention and attendant of a loom towhich it applies.

Fig. 2 is a front elevation of the mechanism of Fig. l.

Fig. 3 is a section showing details of a combined air valve and timer.

Fig. 4 is a plan view of a cutter and operating means 5 v therefor.

Fig. 5 is an end view of the parts shown in Fig. 4.

Fig. 6 is a section 'through an air injector and a side elevation of the cutter.

Fig. 7 is a plan view of a modification applied to a thread remover.

Fig. 8 is a front elevation of the device of Fig. 7.

Fig. 9 is a sectional view showing parts of Figs. 7 and 8.

Fig. 10 is a view to a larger scale illustrating details of a thread holding means. I

Now referring to Figs. 1 and 2, theinvention applies to the battery end of a fly shuttle loom having a loomnumeral 39.

side 20 with a battery generally indicated at 2 1 which is of the usual construction found in Draper looms. It is adapted to be indexed as bobbins or filling packages are transferred in succession as required to a loom shuttle 22. The latter is picked in the usual manner and a filling feeler (not shown) upon sensing near exhaustion of filling acts in a known manner to set in motion parts including a starter shaft 23 to initiate a transfer, so-called.

Upon such indication for transfer or replenishment, a.

transfer hammer 24 is swung under inuence of the forwardly moving lay to project a full package into the shuttle and to expel the empty one.

As is known to those skilled in this art, each bobbin in the battery, some of which are Vseen at 25', has the end of its thread passed toward the battery end, engaged in a notch in the threaded guide rim 26 and then wound about aknob or thread holder 27.

The cycle of operation incidental to a bobbin transfer includes the cutting and binding or holding of an outgoing thread at transfer and also the cutting at the selvage of both the outgoing and the ingoing filling a few picks after transfer. The first of these is effected by a Stafford type cutter such as that shown in United States Patent 2,711,193, the last pick-as extended from the selvage being cut and heldin this cutter and binder. This thread is severed at the selvage a few picks later, that leaving an end in the binder which will be released at the next transfer.

The temple thread cutter also severs the ingoing thread at the selvage, generally a pick or two after it cuts the outgoing filling and that end then hangs from the knob 27, and since it is fairly long, there is considerable danger lis introduced to a combined valve and timer 28 through pipe 29 and from the valve to an injector-suction chamber 30 through tube 31, hollow transferrer stud 32 and tube 33. This injector-suction unit is illustrated in detail at Figs. 4, 5 and 6 and-is of the venturi type; the air entering in tube 33 makes an exit at nozzle 34 which has at either side ports, 35 and 36 through which air is drawn as thejet from the nozzle passes through the venturi chamber 37.

A tube 38 coupled to port 35 extends over to the inner side of the cutter and binder unit denoted by It it attached by a clip or the like to the inner end of the fixed bracket 40 of Vthe cutter which is suspended from the transferrer stud 32 by an arm Cthat function.

1 nut 58. f

and clamping' hub KAfheppen ,end `of the tubeispclrl` sitioned atthe side ofthe cutter vblades and just out of contact with the front 4box plate at such time as the lay-is forward. \7\ht ,n.tlieg-cutterv movesgfin tof-jcut 52,928,430 t fr .The piston "rod, also4 has..` @collar 79. provided :at .an

' appropriate point along itsulength whichactsagainst an into the tube to the extent permitted when,jirst the,

t end at the selvageiscutand=trhento fullest `.extentilater t when the cutterjopensg at-thepektftransfencycle" Of course, at that time itis ejected through the tube', port pj and. the venturiyinto a. suitable.l receptacle 42./.Sucl1 a receptaclemay take the form' 'ofjafclothvor otherbag y* 43 of porous `Amaterialwhichhas its neckfsecured ,to.

aigrommet-,44 formedwith a snaprloop1145'by which itfY @maybe easily attachedvvorudetached to or from the end of the venturi -at which it is engagediua, groove 46.

The ingoingf filling, is cleared` by cutting i lfirst Vat;the

-selvageL drawing :as `much as possible-into; a suction. tube' andY then'cutting Vadjacentizithe thread guide-rim after complirsh thesetfunctionsp a special cutter, isprovided, this cutter .being operableA with an xelongated 'blade` 47 fixed to `an arm` 4S which,asV herein ,showngpist a part Aofthe upper portion. of the" injector-suction chamber `30.

The bladeextends underthe thread 'sothat those. adjacent the lower or transfer positionof thebattery rideontop .of the bladeand"the:one from'fthe bobbin next to be ltransferredienters `a 'notch 49 atV the top ofU the blade ,when a `movablecutterllzhaving a sharp edge-Slis in open position, Figv.6. l t Y An inclined thread trapping member52iixed to the side of the blade 47 opposite the movable cutter prevents the thread from missing the notch and, since it is 4inclined `as shown, `forces the' thread down into the notch.

A suction tube 53 coupled to port 36 extends to a-point Y adjacent thenotch 49aslshown,and 'isnattached-at its open end toftheside of blade'47 bygaclip 545 Thisclip i' Vis iixed in place by a bolt SSfwhich passes'zthroug'h a .slotV Y' in the knife or cutter A 50,tisi threaded'v through `blade y4,7 and Vsecured in adjusted `.position therein by a nutSS. A

spring 56 and'washer57 between the bolthead .and knifel assure shearing pressure `atftlie cuttingwedge. V"lheknife isfurther slightly 4bent'andfalso twistedasolas toimprove VThefclip 54. isA then heldkin.place by The knife is operated vby air pressure andfor thatpur-V posea cylinder `59 lis sealed offbya captori plate 60 in open position as in'Figs. 4 and 6. When air pressure is introduced ,toY nozzle 34 iti-,also passes to the cylinder `through port165, overcomingtspring 64 and pushing knife :50 along `blade` 47 Vpast notch`49 to ycut .the 'thread therein.

Thez entire injector-suction .unit 30, bladeeand cutter are mounted on a depending bracket 66. The unit has a short, faced extension 67 lwhichattaches to a bossl 68 at the lower end of the jsbracketcwhich is itselficlam'ped t0,

the endoftransferrerstud 32 by its huh't69.`

ywhich it is dischargedginto` the Vrece'ptacleltZ. t Tol ac- O-ring 80 held ina recess*` in the fce'of the coupling which forms one interior surface.ofthe cylinder 70. Under'the iniluencetof spring 81 'whichsurrounds the rod Yand is under compression between the collar and a washer S2, the rodisforced in a direction tol compress ring 80 an'dthus -to seal oifthe cylinder 70 `from an exit port 83; The clearance hole `about the rod does permit a substantial'ow when therod` and. collarare SQmoved as toirclease pressure on'` ring 80. t f j AnD-ring S4 recessed in the bore of thecoupling seals it against leakageA so that anyairentering past ring 80 mustow out portj`83 since the opposite vend 'is closed. The washer SZbears against an 0,fring.85 which presses against the inner face ofthe end 76 of the tirst cylinder and is constricted about the piston rod. Y lfiston 77 has considerable clearance withinV the cylinder 72, -while cupped washer 78,whenpu shed to,the .right,

Eig.- 3, will let air byfbutwill not permit-its passagezin the opposite direction;

Cylinderjfll ,has one or more perforations `Stwhich permit air .to l enter VY,behind pistonY 77 as `'it4 is Vmoved to the right, vand also provide an air exit when parts/ return cylinder. This plug serves tomadmit air from the outside so' that whenmoved to the right, Eig. 3,. the air in this to the spacewithinthe cylinder ,and at the piston head head lspace passes by cupped washer 78 and a very small amount thereof passes out the plug 87 `to evacuate this space.` Upon release, the spring tends to return the rod andv piston to `itsinitial position,but the vacuum at the pistonV head is such thattmov'ement .is resisted `and :is

Vlargely -governedby the plug 87 which controlsthe inowy of air. l'By varying one or moreY ofthe parts, the time during which the valve shall remainlopen may be reg-` ulated from a matter of a few seconds to one of minutes.

AThis timerV and valve are Vset `from the starter shaft 23,`

. Fig. 1, and the swinging movement ofjthatshaft isrconveyed to' the `rod 75 by a spring `arm 88;, The latter pressesinwardly on the said rod pushing it and the piston to moreV or less their extreme position. `The ilexibility of therarm makesv it possiblerfor the starter .rod to make an addedjmovement without affecting the timerfafterfthe i latter has become fully set. t

A v4spring 64 maintains VVOf course, the Vstarter shaft vreturns to its original position soon after transfer, butl the timer delays the `closing of the valv'eisolthat; air pressure passes through between -fcollar 79 andring 80 for any reasonable periode-required to'take `care of the thread disposal ,when the-lends atv the The-air under pressure introducedV at tube 29 is -i con-VV v Astrolled 4by a valve and timer, ,Figsgl and i3. AnY elongated .'.cylinderj isthreaded into.aT.-1ike"couplng member Y 71, and, in iturn,v asecondcylinder 72.S threaded to 1the end of the first. f Airenters the coupling 71jat`g73 through tube 29 and the,V cylinder 70 `throughbport'V 74,@ .A sternl orpistonrod 75A passes :through la clearance hole in the couplirngjandfalsoy `one inthe end 76 of V.the first cylinder.

Itrextends'into the second .cylinderand has ,fixed to itsend a piston,77 which hasconsider able clearance -within the cylinder andV a pumpsorcupttype' washerf78 fixed toit to provide; a tight seal in onehdirec its being caught by the air stream. In the `event theLStatf` ford cuttersevers but doesV nothold the end, it .is very `likely to be missed by the suction since it `irlilldrop ,or

Aj y about wildly andiwill not get .into range-pf thetube end. Again, if thereshould besome slackfintheehd held by the cutter and running to the selvage', sincethere are about four inches to thetube end, it maybe missed.

These are all occurrences not at all .likely to `happen in l aV loom Vfunctioning properly,` butto `compensate "forsllch diiliculties if,theyfshouldoccun a modification as in Figs.`

tion. This washer is .held-in place bylafscrew` and washer as (shown.

` 7410 Vprovidesintrovabile `tube anda meansj atgtheilti ,thereof to grip thethread `b efzofreit isgcut rather Athan fatter.` v l :.SPCQicallLaStatfordtype cutter `89V is` providedwith l anextra groove for4 a `second `slide -91 `which'has a .laterally extending bracket, to whichds `fixed the-end einem actuated, moves both .the cutter andtl1e tubt=. since it connects to a stud 95`fixed in both the'slide 91 and the cutter slide 96passingthrou`gh a slot 97 in the web 98 of the double, grooved bracket 99.

'A bellows 100 of rubberor a rubber-fabric composition is cemented or otherwise fastened to the tube end. It has suticient rigidity to continue'in-substantially the direction of the tube and at the time the cuttermoves in to get the outgoing filling, it engages against the front box plate registering with the usual slot therein and' aligned with the filling as it lays along the shuttle length. The suction is, of course, applied at the time` so the filling is actually drawn to and held by the air stream at the bellows end. Just after that the cutter enters theshuttle `to sever and grip the filling. ln the event of slack or failure of the cutter to hold, the thread has already been gripped so that the end may drop or the thread tend to sag without danger of its being missed by the suction tube, the cutter or both. When the cutter is retracted, the tube and bellows are also'retracted. The thread is drawn into the tube or perhapsonly the bellows to a slight extent at the time, but will be taken in and disposed of in later steps just as explained before.

To review the operation, the loom may be considered as running on a partially filled bobbinand at that time the outgoing end-will be held -at the Stafford cutter with considerable of its length being drawn into the tube 38 or 38', the ingoing thread end being drawn into the tube 53, but also lying in the notch 49 and extending out about rim`26 to knob 27; A

At the indication for'transfer starter rod 23 is rocked swinging arm 88 to press in the rod 75 to an extent depending upon the time interval for which it may be set. The air pressure is then admitted from cylinder 70 past the ring 80 to port 83 and by tube 31, hollow stud 32 and tube 33 to the nozzle 34 and venturi 37. This sets up suction in lines 38 and 53 and, of course, the timer cycle is started, the rod 75 beginning to return slowly as air is admitted through plug 87. j

The Stafford type cutter moves in to cut and hold the outgoing end and opens to release the end from the previous transfer which is discharged. into the bag 43.

battery in which a plurality of filling `packagesai'e mounted, means for successively't'ransferring saidfilling packages to the shuttle in response to an indication takenfrom a vpackage nearing exhaustion, a cutter and binder for cutting and holding the outgoing thread, suction meansfor disposing of that thread when released by the binder, a second suction means for retaining a cut end of the ingoing thread and a cutter adjacent said suction Vmeans for severing that end to release it for disposalby said suction means and timer means vfor determining the period of time during which said suction means shall remain in operation.

2. In an automatic bobbin changing loom, a shuttle, a battery in which a plurality of filling packages are mounted, means for successively transferringsaid filling packages to the shuttle in response to an indication taken 3. In an automatic bobbin changing loom',a shuttle, a

battery in Vwhich, a plurality of filling packages are mounted, means for successively transferring said filling Either before or afterits return, the outgoing end is caught by suction atuthe tube o r bellows as the case may be. A few picks later the end is cut at the selvage and as much as can be is drawn into tube 38.

At the same time the above mentioned part of the cycle incidental to the outgoing thread is, going on, the battery thread cutter and vacuum-system for the ingoing thread are functioning. As soon as air is admitted to the system by the combined timer-valve, it also actuates piston 61 and thereby knife 50 to cut the filling which was sucked in at tube 53 on the previous transfer. When cut it is discharged to bag 43.

The new ingoing filling moves to a position above notch 49 being held from entering the notch since knife 50 will remain extended to cutting position as long as the air pressure is applied to the cylinder 59 and piston 61. That thread also lays up against guard 52 and falls to notch 49 when the piston and knife are retracted. Then when the ingoing end is cut at the selvage, as much of the end as can be is sucked into tube 53. t

This completes the cycle leaving parts and thread ends in the position they occupy during the run between transfers and after the ends have beenvcut at the selvage. The timer closes the valve shortly after both threads have been cut at the selvage.

While one embodiment of the invention has been disclosed, it is to be understood that the inventive concept may be carried out in a number of ways.A This invention is, therefore, not to be limited to the precise details described, but is intended to embrace all variations and modifications thereof falling within the spirit of the invcntion and the scope of the claims.

packages to the shuttle in response to an indication taken from a package nearing exhaustion, a cutter and binder for cutting and holding the outgoing thread, suction `means for disposing of that thread when released by the binder, a second. suction means for retaining a cut end of the ingoing thread and a cutter adjacent said suction means for severing that end to release it for disposal by said suction means, an air system including a valve and timer and means functioning therewith to actuate said cutter for the ingoing thread.

4. In an automatic bobbin changing loom, a shuttle, a battery in which a plurality of filling packages. are mounted, means for successively'transferring said filling packages to the lshuttle inresponse to an indication taken from a packagenearing exhaustion, a cutter and binder for cutting and holding theV outgoing threadf suction means located at the outer end of said battery for dis'- posing of an end of an ingoing thread, a' cutter immediately adjacent said suction means for severing that thread to release it for disposal by said suction means anda common source of air pressure and means operable thereby for inducing negative pressure in said suction means and for actuating said cutter.

5. In an automatic bobbin changing loom, a shuttle, a battery in which a plurality of filling packages are mounted, means for successively transferring said filling packages to the shuttle in response to an indication taken from a package nearing exhaustion, a cutter and binder for cutting and holding the outgoing thread, a suction means for disposing of an end of an ingoing thread,- a cutter for severing that thread adjacent a point at which its end is held at said battery, and a timed means functioning from a source of air under pressure for inducing negative pressure in said suction means and for actuating said cutter.

6. Mechanism as defined in claim 5 wherein said timed means comprises a valve and a timer operatively associated therewith, said timer operating under the influence of an air displacement means.

7. In an automatic bobbin changing loom, a shuttle, a battery in which a plurality of filling packages are mounted, means for successively transferring said filling packages to the shuttle in response to an indication taken f from a package nearing exhaustion, a cutter and bindery vfor cutting and holding the outgoing thread, suction cylinder.

wS. ntan automatic hobbin. changing loom, 1a i shuttle,

. 'abatteryi in which aplur'alityjofllingjfpackages are fmojinted," means forfsuccessively` transferring said lling packages to thefshuttle in response' toj` an' indication'vtalen 'from acpackagemnearing exhaustion, aj cutter and'binder ,A

for cutting and holding the. outgoing'zth'read, "suction 7"means forretain-inganend ofthe ingoing"thr'eada :cut-

vting,means'comprising a blade',- a notch in said blade, a Y lnife Vcooperating with saidbl'ade and 'notch tosevei theV A ingoing -thread to" release Vit for' disposal"k by. said -suctionV 'meansfa cylindeiand Vpiston" forliactu'ating' said cutter,` aV

source of airjpressure and means connecting,saidpressure' le: to the cylinderV and other means '.throughwhich' said air 'is conducted for inducing subatmospheric pressure in sai 9.-Me`chanisr n asv defined' in ,claims-8' wherein a'gard is plositionedatone'side of `saidnotch ,to stop thethread- @in position tofll into said` notch when the knife ismoved v"fromthe notc'hg. Y ,4 Y

`inc'n1nt`e d, means for successively transferringA saidflling .ff @packages 'to the fshuttle in response.. to' arij indication taken" ffrom ay package nea-ring exhaustion, `a cutter andbinder ,for cutting 'and holding the" outgoing "thread, suction means for"dispo sing of thatthreadwhen' released by'the ,binder, axsecond suction meansffor retainingaV cutfed of `the'ingoing thread and a cutterfor` severingthat,l end to releaseit "for disposalj'byfsai'dsuction means and' timer v means for. determining the' period of tir`ne' du''ring` which '4 said suction'meansshall remain Ain operation, said timer means "comprising aV cylinder, a Vpiston movable in saidV cylinder, spring means to bias the piston toward [one end-fof the cylinder, air exhaust ports VSin 'Jthe `cylinder atV `onee'nd of thelpistonfandi aplug of peri/iOlLS material at lthe other* for slowly Apermitting the bleedingvof fair tothfe 1,1. Mechanismen in dammit/,herein- Ss'iafplyg ijs' of v {siiiteredv metal.V

assetati i; F122Inan. automatic" bobhinthanginggloom, a shuttle, :a batteryinl-whicjha,plurality f` filling packages are '-mounted; imeansior successively, Ytransferring said ,filling f'folt'fculttinggand holdingithfoutgoing thread, a `suction meansj forifdisposing"offthat'fthread when' released by the fbinder,` `,and means "comprising a deformable extension irnova'ble :,toajposition-V,'overlying 1 the 'outgoing' thread at 'I0 the shut-t'lei'forv engaging said threa'd'before itis` severedt,

13.",in anV automaticbobbinjchanging loom, a shuttle, Aa battery infwh ichf a'gplurality of( filling, packages `are mounted,means Vfor'successively 'transferring said filli -ingfpackagesj'toftheshuttlel iniresponse to an indication i?, itakenjfromafpackagemearing exhaustion,a cutter and "binderfor cutting andiholgling.the outgoing thread,

ber fforming" an extensiorryof` said tube-movable" with it to a position adjacentthejthread` atfthe shuttle for holding that thread prior `t'itsheing severedfby, the ,cutter` jthereby'V to 4facilitate-"jnd `assure fits` entrancej;;into the` tbewheneyezfre'lease l' Y `14, Mechanism ask-defined in4 ciaimf113 wherein said deformable member 'comprises aigtnbe of-rubber-like ma- `fthe l--parts are' `in position' at` the "traiisfer gjcycle.

rubber-likematerial fixedftothe end :of said suction rtube.

Referencesfcitea'pinthe fileofthisjpateat tosan indication taken' acntter and binder i Vmeans 'for'imoyingssaidcutter "and binder toward the` fshuttle attransferk a suctionl tubemovableftoward :the4 Y Y shuttle vwith isaid icntterfarid; binder for disposing Lof saidV y"threadoivhen releasedjjby thebiuder, adeformablememi 

